Here are few routines needed to manage FSL UPMs. It doesn't include
UPM programming, yet. So far u-boot manages to program everything.
Signed-off-by: Anton Vorontsov <[EMAIL PROTECTED]>
---
arch/powerpc/Kconfig | 3 +
arch/powerpc/sysdev/Makefile | 1 +
arch/powerpc/sysdev/fsl_upm.c | 65 +++++++++++++++++++++++++++++
include/asm-powerpc/fsl_upm.h | 90 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 159 insertions(+), 0 deletions(-)
create mode 100644 arch/powerpc/sysdev/fsl_upm.c
create mode 100644 include/asm-powerpc/fsl_upm.h
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a4fa173..aab8106 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -463,6 +463,9 @@ config FSL_PCI
bool
select PPC_INDIRECT_PCI
+config FSL_UPM
+ bool
+
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
bool
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 99a77d7..98dbfdd 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_U3_DART) += dart_iommu.o
obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
obj-$(CONFIG_FSL_SOC) += fsl_soc.o
obj-$(CONFIG_FSL_PCI) += fsl_pci.o
+obj-$(CONFIG_FSL_UPM) += fsl_upm.o
obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o
obj-$(CONFIG_QUICC_ENGINE) += qe_lib/
obj-$(CONFIG_PPC_BESTCOMM) += bestcomm/
diff --git a/arch/powerpc/sysdev/fsl_upm.c b/arch/powerpc/sysdev/fsl_upm.c
new file mode 100644
index 0000000..6e35bf4
--- /dev/null
+++ b/arch/powerpc/sysdev/fsl_upm.c
@@ -0,0 +1,65 @@
+/*
+ * Freescale UPM routines.
+ *
+ * Copyright (c) 2007 MontaVista Software, Inc.
+ * Copyright (c) 2007 Anton Vorontsov <[EMAIL PROTECTED]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <asm/fsl_upm.h>
+
+spinlock_t upm_lock = __SPIN_LOCK_UNLOCKED(upm_lock);
+unsigned long upm_lock_flags;
+
+int fsl_upm_get_for(struct device_node *node, const char *name,
+ struct fsl_upm *upm)
+{
+ int ret;
+ struct device_node *lbus;
+ struct resource lbc_res;
+ ptrdiff_t mxmr_offs;
+
+ lbus = of_get_parent(node);
+ if (!lbus) {
+ pr_err("FSL UPM: can't get parent local bus node\n");
+ return -ENOENT;
+ }
+
+ ret = of_address_to_resource(lbus, 0, &lbc_res);
+ if (ret) {
+ pr_err("FSL UPM: can't get parent local bus base\n");
+ return -ENOMEM;
+ }
+
+ switch (name[0]) {
+ case 'A':
+ mxmr_offs = LBC_MAMR;
+ break;
+ case 'B':
+ mxmr_offs = LBC_MBMR;
+ break;
+ case 'C':
+ mxmr_offs = LBC_MCMR;
+ break;
+ default:
+ pr_err("FSL UPM: unknown UPM requested\n");
+ return -EINVAL;
+ break;
+ }
+
+ upm->lbc_base = ioremap_nocache(lbc_res.start,
+ lbc_res.end - lbc_res.start + 1);
+ if (!upm->lbc_base)
+ return -ENOMEM;
+
+ upm->mxmr = upm->lbc_base + mxmr_offs;
+ upm->mar = upm->lbc_base + LBC_MAR;
+
+ return 0;
+}
diff --git a/include/asm-powerpc/fsl_upm.h b/include/asm-powerpc/fsl_upm.h
new file mode 100644
index 0000000..fe5a5d9
--- /dev/null
+++ b/include/asm-powerpc/fsl_upm.h
@@ -0,0 +1,90 @@
+/*
+ * Freescale UPM routines.
+ *
+ * Copyright (c) 2007 MontaVista Software, Inc.
+ * Copyright (c) 2007 Anton Vorontsov <[EMAIL PROTECTED]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_POWERPC_FSL_UPM
+#define __ASM_POWERPC_FSL_UPM
+
+#include <linux/spinlock.h>
+#include <asm/io.h>
+
+#define LBC_MAR 0x68
+#define LBC_MAMR 0x70
+#define LBC_MBMR 0x74
+#define LBC_MCMR 0x78
+
+#define LBC_MXMR_RUNP 0x30000000
+
+struct fsl_upm {
+ void __iomem *lbc_base;
+ void __iomem *mxmr;
+ void __iomem *mar;
+};
+
+extern spinlock_t upm_lock;
+extern unsigned long upm_lock_flags;
+
+extern int fsl_upm_get_for(struct device_node *node, const char *name,
+ struct fsl_upm *upm);
+
+static inline void fsl_upm_free(struct fsl_upm *upm)
+{
+ iounmap(upm->lbc_base);
+ upm->lbc_base = NULL;
+}
+
+static inline int fsl_upm_got(struct fsl_upm *upm)
+{
+ return !!upm->lbc_base;
+}
+
+static inline void fsl_upm_start_pattern(struct fsl_upm *upm, u32 pat_offset)
+{
+ spin_lock_irqsave(&upm_lock, upm_lock_flags);
+
+ out_be32(upm->mxmr, LBC_MXMR_RUNP | pat_offset);
+}
+
+static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
+{
+ out_be32(upm->mxmr, 0x0);
+
+ while (in_be32(upm->mxmr) != 0x0)
+ cpu_relax();
+
+ spin_unlock_irqrestore(&upm_lock, upm_lock_flags);
+}
+
+static inline int fsl_upm_run_pattern(struct fsl_upm *upm,
+ void __iomem *io_base,
+ int width, u32 cmd)
+{
+ out_be32(upm->mar, cmd << (32 - width));
+
+ switch (width) {
+ case 8:
+ out_8(io_base, 0x0);
+ break;
+ case 16:
+ out_be16(io_base, 0x0);
+ break;
+ case 32:
+ out_be32(io_base, 0x0);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+#endif /* __ASM_POWERPC_FSL_UPM */
--
1.5.2.2
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